<template>
  <ul class="todo-main">
    <li :class="{active:isStyle === index}"
      @mouseenter="isStyle = index"
      @mouseleave="isStyle = -1"
      v-for="(todo,index) in todos" 
      :key="todo.id"
    >
      <label>
        <input type="checkbox" :checked="todo.comment" @change="CheckedTodo(index)"/>
        <span> {{ todo.title }} </span>
      </label>
      <button class="btn btn-danger" @click="deletetodo(index)">删除</button>
    </li>
  </ul>
</template>

<script lang="ts">
import { defineComponent,ref } from "vue";
export default defineComponent({
  name: "List",
});
</script>

<script setup lang="ts">
import {todosType} from '../../App.vue'
const isStyle = ref(-1)
defineProps<{todos:todosType}>()
const emit = defineEmits<{
  (event:'isChecked',index:number):void
  (event:'deleteTodos',index:number):void
}>()
//是否选中
const CheckedTodo = (index:number)=>{
  emit('isChecked',index)
}
//删除单个
const deletetodo = (index:number)=>{
  emit('deleteTodos',index)
}
</script>

<style scoped>
/*main*/
.todo-main {
  margin-left: 0px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding: 0px;
}

.todo-empty {
  height: 40px;
  line-height: 40px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding-left: 5px;
  margin-top: 10px;
}
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}
li.active{
  background-color: aquamarine;
}
li.active .btn{
  display: block;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}
</style>
